Improvement in extension-chandeliers



J. F. BROWN. Extension Chandelier.

No. 196,872. Patented Nov 6, 1877.

A tlamey.

JOHN J RO N, OE PHILADELPHIA, PENNSYLVANIA, ASSIGNOR Fro cor.- l v I JQNELIUS aco, or SAME PLACE. 1

"IMPROVEMENT IN EXTENJISEION-Q'HY'AVNDELIERS}' Specification forming part of Letters'Patent No. 196,872, dated November 6, 1 877 application filed September 20, 18771 To all whom it magjcohcewi: 'j p Be it known 6113.131,JOHN.F..BBOWN,Of the city and countyof Philadelphia, and State of Pennsylvania, have invented a new and-useful Improvement. in Extension-Chandeliers or Slide-Lights, which, improvementisflfully set forth in the following specification and ac'com panying drawings, inj'wliich'"- Figure 1 is a side elevation or the'ehandelier or light'embodyingmy invention; Fig. 21s a central vertical section thereof, enlarged. Fig. 3 isa side View. of a portion of Fig. 2, partly sectional. Figs. 4. and 5 are horizontal sections thereof. Fig.6 isa view of the lower end thereof. Figs. 7 and 8 are face views of ratchets. Fig. 9 is a face view of the friction collar.

Similar letters of reference indicate corre sponding parts in the several figures.

Myinvention consists of the extensible rod, bar, or portion of a chandelier or light re strained by friction mechanism of such construction that said rod maybe retained at any desired height. For this purpose I employ a spiral rod, clutch, and friction-springs in connection with a box having an annular bed, on

opposite sides of which are the springs and clutch, whereby the friction will be uniform throughout the length of the rod, the parts being easily applied and fitted in position.

It also consists in combining with the above a nut for adjusting the'friction.

Referring to the drawings, A' represents a length of pipe or tube-from which the chandelier or light willbe suspended. Within the v pipe A there is fitted a spirally-formed rod or bar, B, which is made extensible and prevented from'separation therefrom by a'- cap, a, screwed or secured to the lower end of the pipe A.

On the spiral rod B there is placed a disk, G, having a quadrilateral opening, b, and also a disk, D, having a circular opening, 01, and

,the adjacent sides of said disks are formed with ratchet-teeth e f, which engage and dis engage after the manner of a clutch, so that when the upper disk is rotated in one direction it will impart rotation to the lower disk, and in the other direction it will ride freely over said lower disk.

E represents a screwcollar which is formed I with or secured to the lower disk D, and it has a circular opening through which passes freely the spiral rod B.- I

The disks CD and aportio'n of the collar E are inclosedby a boX,'F, which is, screwed to the cap a, and ator about 'thecenter of said whichl passes freely the spiral ,rod; B, and

being.interposedbetween saidddisk and bed. Against the lower face of the bed there bear lower portion of. thebox F. I I

The collar E projects below the boX F, and has there fitted to it a nut, K, which bears tom of the box F and said nut.

ceives' rotation from the upper disk 0; conlower disk.

inner circumference of the ring is flattened,

ed thereto for convenient operation of the extension.

light is to be lowered,-the' handle K will be grasped and drawn on. I V The spiral rod, owing to its connection with the pipe or tube A, cannot rotate, but as it descends it imparts rotation to the upper disk G. This rotates the lower disk D and collar the lower side of the bed G, it is evident that the rotation of the disks is restrained by the friction of the springs. Gonsequentlythe spiral rod is controlled by said friction, which, howon the handle K; whereforethe chandelier or box is secured an annular bed, G, through against the upper face of which the lower disk Ehas a bearing, a suitable washer. orwashers.

one or more springs, H, which project upward: ly firom,' and are-secured to, a ring or band, J, encircling the collar E, and inclosed by the secured to the lower end or portion of the spiral rod B, and a handle, K',suitably connect.- I

1 It will be seen that, when the chandelier or v p E, butasthe ring J and its springs H rotate with the collar E, and said springs bear'against L ever,'can be overcome by the power exerted When the chandelier or light is beingraised,

the teeth of the upper disk 0 rise and. ride freely over the teeth of the lower disk, whereby, by the non-rotation of the disk D, collar E, and ring J, the friction of the springs H renders no immediate service, and there is no resistance to the ascent of the rod B. When however, the ascent is reached, the teeth of the disks again engage, and the friction restrains the descent of the tube and chandelier or light in the manner and for the purpose as has been stated.

In order to adjustthe frictionof the springs H to the weight of parts suspended from the 'tube, the nut K will be properly turned on the collar E, so that the degree of pressure of the springs on-the bed G may be increased or decreased, according to requirements.

It will also be noticed that the clutch-disks and friction-springs are on opposite sides of the annular bed G, which projects horizontally on the inner face of the box F, and said springs are disconnected fi 'om the disks, whereby the springs may be readily slipped over the collar E, and their friction remains uniform through v out the entire extent of the rodor portion B.

The cap n is loose, and ar s s eib tm s as Q a box, besides providing the bearing forthead H justing-nut.

Having thus described my inventiomwhat 1 claim as new, and desire to secure by Letters Patent, is

1. The spiral rod B and the box F, with an; nular bed G, in combination with the clutchdisks 0 D and friction-springs H, on opposite H sides of said bed,substantially as and for the i t f purpose set forth. 1

2. The spiral rod 13, clutch disks 0 1), and

springs H, in combination with the adjusting- -nut K, substantially as and for the purpose set forth.

. 3. The loose cap L, closingrthe bottomlof y the box F and forming thejbearing for the adjusting-nut K, substantially as for the purpose set forth.

4. The encircling-ring carrying the' pro- I, jecting springs H and interposed between the t y, s annular bed Gan bOttO III QELP L, substantially as and for the purpose .setfortlr- 5. The spiral ma Bfa'nd ant sass on; ,1 a in combination with the screw collar E, spring! .1 H, and adjusting-nut K, substantiallyasiand i j for the purpose set forth. I I1 1 I I 1 JOHN; F; BRO WN Witnesses: JOHN A. Wrnnnnsxmnu,

JNo; A. BE L. 

